A local desktop proxy checker and API key validator. Test HTTP/HTTPS/SOCKS proxies against a target URL, search for specific text, and (optionally) run a headless browser with screenshots. Validate OpenAI, Gemini, YouTube, or custom API keys in batch with retries, jitter, and a global RPS limiter. Export clean CSV/JSON reports.
I built API Key Health Checker an open-source desktop app that helps you validate API keys you own and run batch checks without getting surprised by rate limits.
Simple desktop app to validate API keys for popular services and run batch checks with rate limits and reports. Supports OpenAI (ChatGPT), Google Gemini, YouTube Data API, and custom endpoints. For MacOS, Windows, Linux.
- Batch checks with concurrency, random delay
- Multiple parallel runs with live logs, stats, and summary
- Import keys from TXT/CSV/JSON
- Export reports to CSV/JSON
- UI in English, Spanish, and Russian.
- Works locally, without telemetry.
